angular2
Version:
Angular 2 - a web framework for modern web apps
115 lines • 15 kB
JavaScript
'use strict';var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var xhr_1 = require('angular2/src/compiler/xhr');
var collection_1 = require('angular2/src/facade/collection');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var async_1 = require('angular2/src/facade/async');
/**
* A mock implementation of {@link XHR} that allows outgoing requests to be mocked
* and responded to within a single test, without going to the network.
*/
var MockXHR = (function (_super) {
__extends(MockXHR, _super);
function MockXHR() {
_super.apply(this, arguments);
this._expectations = [];
this._definitions = new collection_1.Map();
this._requests = [];
}
MockXHR.prototype.get = function (url) {
var request = new _PendingRequest(url);
this._requests.push(request);
return request.getPromise();
};
/**
* Add an expectation for the given URL. Incoming requests will be checked against
* the next expectation (in FIFO order). The `verifyNoOutstandingExpectations` method
* can be used to check if any expectations have not yet been met.
*
* The response given will be returned if the expectation matches.
*/
MockXHR.prototype.expect = function (url, response) {
var expectation = new _Expectation(url, response);
this._expectations.push(expectation);
};
/**
* Add a definition for the given URL to return the given response. Unlike expectations,
* definitions have no order and will satisfy any matching request at any time. Also
* unlike expectations, unused definitions do not cause `verifyNoOutstandingExpectations`
* to return an error.
*/
MockXHR.prototype.when = function (url, response) { this._definitions.set(url, response); };
/**
* Process pending requests and verify there are no outstanding expectations. Also fails
* if no requests are pending.
*/
MockXHR.prototype.flush = function () {
if (this._requests.length === 0) {
throw new exceptions_1.BaseException('No pending requests to flush');
}
do {
this._processRequest(this._requests.shift());
} while (this._requests.length > 0);
this.verifyNoOutstandingExpectations();
};
/**
* Throw an exception if any expectations have not been satisfied.
*/
MockXHR.prototype.verifyNoOutstandingExpectations = function () {
if (this._expectations.length === 0)
return;
var urls = [];
for (var i = 0; i < this._expectations.length; i++) {
var expectation = this._expectations[i];
urls.push(expectation.url);
}
throw new exceptions_1.BaseException("Unsatisfied requests: " + urls.join(', '));
};
MockXHR.prototype._processRequest = function (request) {
var url = request.url;
if (this._expectations.length > 0) {
var expectation = this._expectations[0];
if (expectation.url == url) {
collection_1.ListWrapper.remove(this._expectations, expectation);
request.complete(expectation.response);
return;
}
}
if (this._definitions.has(url)) {
var response = this._definitions.get(url);
request.complete(lang_1.normalizeBlank(response));
return;
}
throw new exceptions_1.BaseException("Unexpected request " + url);
};
return MockXHR;
})(xhr_1.XHR);
exports.MockXHR = MockXHR;
var _PendingRequest = (function () {
function _PendingRequest(url) {
this.url = url;
this.completer = async_1.PromiseWrapper.completer();
}
_PendingRequest.prototype.complete = function (response) {
if (lang_1.isBlank(response)) {
this.completer.reject("Failed to load " + this.url, null);
}
else {
this.completer.resolve(response);
}
};
_PendingRequest.prototype.getPromise = function () { return this.completer.promise; };
return _PendingRequest;
})();
var _Expectation = (function () {
function _Expectation(url, response) {
this.url = url;
this.response = response;
}
return _Expectation;
})();
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Incoming requests will be checked against\n   * the next expectation (in FIFO order). The `verifyNoOutstandingExpectations` method\n   * can be used to check if any expectations have not yet been met.\n   *\n   * The response given will be returned if the expectation matches.\n   */\n  expect(url: string, response: string) {\n    var expectation = new _Expectation(url, response);\n    this._expectations.push(expectation);\n  }\n\n  /**\n   * Add a definition for the given URL to return the given response. Unlike expectations,\n   * definitions have no order and will satisfy any matching request at any time. Also\n   * unlike expectations, unused definitions do not cause `verifyNoOutstandingExpectations`\n   * to return an error.\n   */\n  when(url: string, response: string) { this._definitions.set(url, response); }\n\n  /**\n   * Process pending requests and verify there are no outstanding expectations. Also fails\n   * if no requests are pending.\n   */\n  flush() {\n    if (this._requests.length === 0) {\n      throw new BaseException('No pending requests to flush');\n    }\n\n    do {\n      this._processRequest(this._requests.shift());\n    } while (this._requests.length > 0);\n\n    this.verifyNoOutstandingExpectations();\n  }\n\n  /**\n   * Throw an exception if any expectations have not been satisfied.\n   */\n  verifyNoOutstandingExpectations() {\n    if (this._expectations.length === 0) return;\n\n    var urls = [];\n    for (var i = 0; i < this._expectations.length; i++) {\n      var expectation = this._expectations[i];\n      urls.push(expectation.url);\n    }\n\n    throw new BaseException(`Unsatisfied requests: ${urls.join(', ')}`);\n  }\n\n  private _processRequest(request: _PendingRequest) {\n    var url = request.url;\n\n    if (this._expectations.length > 0) {\n      var expectation = this._expectations[0];\n      if (expectation.url == url) {\n        ListWrapper.remove(this._expectations, expectation);\n        request.complete(expectation.response);\n        return;\n      }\n    }\n\n    if (this._definitions.has(url)) {\n      var response = this._definitions.get(url);\n      request.complete(normalizeBlank(response));\n      return;\n    }\n\n    throw new BaseException(`Unexpected request ${url}`);\n  }\n}\n\nclass _PendingRequest {\n  url: string;\n  completer: PromiseCompleter<string>;\n\n  constructor(url) {\n    this.url = url;\n    this.completer = PromiseWrapper.completer();\n  }\n\n  complete(response: string) {\n    if (isBlank(response)) {\n      this.completer.reject(`Failed to load ${this.url}`, null);\n    } else {\n      this.completer.resolve(response);\n    }\n  }\n\n  getPromise(): Promise<string> { return this.completer.promise; }\n}\n\nclass _Expectation {\n  url: string;\n  response: string;\n  constructor(url: string, response: string) {\n    this.url = url;\n    this.response = response;\n  }\n}\n"]}